Improvement in snow-plows



UNITED STAT-Es PAIrEN'I OFFICE.

HENRY TWITOHELL AND GEORGE E. PARSONS, OF PULASKI, NEW YORK.

IMPROVEMENT IN SNOW-FLOWS.

Specification forming part of Lettere Patent No. 172,799, dated January25, 187B; application filed October 6, 1873.

To all whom t may concern:

Be it known that we, HENRY TwITcHELL and GEORGE E. PARsoNs, of Pulaski,in the county of Oswego and State of New York, have-invented a newandlmproved Snow- Plow; and we do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe accompanying drawing, forming a part of this specification, inwhich- Figure 1 is a side elevation. Fig. 2 is a front View.

The invention relates to that well-known class of snow-plows in which aninclined plane is used to raise the snow, side colters to sever it fromthe mass on each side, and a moldboard or wedge at the head of theinclined plane to divide and force the snow laterally to some distancebeyond the track.

The means whichv we have invented,l and which constitute a decidedimprovement in this special class of snow-plows, will irst be fullydescribed, and then clearly pointed out in the claim.

A is the inclined plane; B B, the side colters, and O the snow-ejector.

We iind that where the snow on the track is cut thoroughly from the masson each side the ultimate work is much better done tha under ordinarycircumstances.

For this purpose we usev bow-plates or top cutters D D, which also serveto form supporting-arches to the colter side plates, preventing themfrombeing bent outwardly, and retaining them always in their proper relativeposition. r)These are all strengthened and reenforced by a projectingbrace, E, attached at oneend to the mold-board or ejector O and to thebow-plates D.

The front edges F of the side colters B are inclined in a forwarddirection in respect to the base of the inclined apron A, so as to causethe colters to enter the snow, for dividing the same preparatory tobeing elevated up the inclined plane by the forward movement of the lsnow from being thrown off laterally until it reaches the doublemold-board or divider O.

The divider and snow-ejector O has a projecting flange, c, whichprevents the action of the force (tending to throw the snow) from beingexerted in an upward direction, and compels the mass of snow to shootout in a horizontal direction.

In practice, with this improvement a snowplow is found to eject the snowover and beyond the adjacent track.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

The snow-plow having the inclined shovellicor A, widened under the sideguides, the forwardly and laterally curved overhanging side guides c,meeting each other at a sharp angle centrally, and extending laterallybeyond said iioor, the center cutter, side cutters B, bows D, and centerbrace E, constructed and arranged as shown and described.

HENRY TWITCHELL. GEORGE E. PARSONS.

` Witnesses:

J. H. CLARK, J. W. SHUE.

